Revert "Merge pull request #11737 from kwonoj/feat-cache-capacity" (#11906)

This reverts commit 181169b743, reversing
changes made to baced3152f.

spec/api-web-frame-spec.js

@@ -139,10 +139,4 @@ describe('webFrame module', function () {
       webFrame.setLayoutZoomLevelLimits(0, 25)
     })
   })
-
-  it('supports setting cache capacity', function () {
-    assert.doesNotThrow(function () {
-      webFrame.setCacheCapacity(1024)
-    })
-  })
 })